/** Maximum possible z-index */
declare const zIndexMax = 2147483647;
declare const addCustomProperty: (definition: PropertyDefinition, throwOnError?: boolean) => void;
declare const zIndex: {
    behind: number;
    default: number;
    inFront: number;
    layer1: number;
    layer2: number;
    layer3: number;
    layer4: number;
    layer5: number;
    layerUI: number;
    layerMax: number;
};

export { addCustomProperty, zIndex, zIndexMax };